MiS Profile
Alheydis Geiger
Research interests
My main focus is the area of tropical geometry. In particular in its connections to algebraic geometry, enumerative geometry, combinatorics and polyhedral geometry, matroid theory, and its computational aspects.
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Publications
Curriculum vitae
Since June 2025, I am funded by DFG within the priority programm "Combinatorial Synergies" by an "Eigene Stelle" at MPI MiS in Leipzig. Between August 2023 and May 2025 I was post-doc in the math software group lead by Michael Joswig at MPI MiS in Leipzig. From July 2022-August 2023 I was a post-doctoral researcher in the Non-Linear Algebra Group by Bernd Sturmfels at MPI MiS in Leipzig.
- July 2022 PhD (Universität Tübingen), "Tropical Geometric Counting Problems", supervisor Prof. Hannah Markwig
- March 2020 Master of Science (Universität Tübingen), Masterthesis: Tropical Cubic Surfaces - Enumeration and Lines, supervisor: Prof. Hannah Markwig.
- Sep. 2018 Master of Science (University of Warwick), Masterthesis: Realisability of infinite families of tropical lines on general smooth cubic surfaces, supervisor: Prof. Diane Maclagan
- Oct. 2016 Bachelor of Science (Universität Tübingen)
- 31.03 – 04.04.2025 Combinatorial Algebraic Geometry - Highlighting Underrepresented Genders, Goethe University Frankfurt am Main
Talk: „Real Tropical Quartic Curves and their Bitangents“ - 19.03. – 21.03.2025 Combinatorial Synergies East, MPI MiS Liepzig
Talk: „The self-dual Grassmannian, Matroids & Positivity “ - 07.-11.10.2024 Tropical geometry: Moduli spaces and matroids, Goethe University Frankfurt am Main
Talk: „Self-dual matroids and the tropical Grassmannian“ - 11.09 – 13.09.2024 Combinatorial Synergies Kick-Off, Osnabrück
Talk: „Self-dual matroids and the tropical Grassmannian“ - 16.-18.10.2023, Chow Lectures, preparatory class: "M-convex functions, (valuated) matroids and Lorentzian polynomials", MPI MiS Leipzig
- 25.-28.9.2023, DMV Meeting, Ilmenau
Talk: "Positive del Pezzo Geometry" - 7.-11.8.2023, Algebraic, Tropical, and Logarithmic workshop, Banff
Talk: "Self-dual matroids from canonical curves" - 10.-14.7.2023, SIAM AG, Eindhoven
Talk: "Positive del Pezzo Geometry" in the Minisymposium "Real Algebraic Geometry" - 28.-29.6.2023, 24 Hours of Combinatorial Synergies, Magdeburg
Talk: "Positive del Pezzo Geometry" - 15.6.2023, Joint Algebra Seminar, Aachen (online)
Talk: "Positive del Pezzo Geometry" - 15.6.2023, Oberseminar Algebra, Chemnitz
Talk: "Positive del Pezzo Geometry" - 31.5.-2.6.2023, Computeralgebra Fachschaftstagung, Hannover
Talk: "Self-dual matroids from canonical curves - computational challenges" - 29.-31.3.2023, Regional Workshop in Algebraic Geometry, Jena
Talk: "Self dual matroids from canonical curves" - 17.2.2023, LMS workshop on Tropical Mathematics
Talk: "Self-Duality in Tropical Geometry" - 24.-25.11.2022, MOM workshop on MaRDI, OSCAR and MATHREPO
Talk: "Self-dual matroids from canonical curves - computational challenges" - 22.11.2022, Algebra Seminar Osnabrück
Talk: "A tropical count of real bitangents to plane quartic curves" - 14.-18.11.2022, Newton-Okunkov Bodies & Tropical Geometry, Frankfurt
Talk: "Self dual matroids from canonical curves" - 7.11.2022, Moduli Day, MPI MiS Leipzig
Talk: "Self dual matroids from canonical curves" - 01.08.-05.08.2022 "Young Researchers Conference in Non-Archimedean and Tropical Geometry", Regensburg
Introductory Lecture: "Applications of tropical geometry" - 20.06.-24-06.2022 "MEGA", Kraków, Poland
- 15.03.-17.03.2022, "Lectures on Theta - Replacement", MPI MiS Leipzig
- 29.11.-1.12.2021 „Women in Algebra and Symbolic Computation II“, SFB-TRR 195, Bad Dürkheim
Talk: „Towards counting tropical binodal surfaces“ - 24.-30.10.2021, Oberwolfach Seminar: Tropical Curves, Logarithmic Structures, and Enumerative Geometry
- 13.-16.09.2021, Fifth annual conference of the SFB-TRR 195, RWTH Aachen
Talk: "Counting tropical binodal surfaces" and Joint Talk: "A tropical proof of Plücker's Theorem" with Marta Panizzut - 16.08.-20.08.2021 SIAM Conference on Algebraic Geometry
Talk: "Deformations of Bitangent Classes of Tropical Quartic Curves" - 07.06.-11.06.2021 MEGA Conference, University Tromsø - The Artic University of Norway, Online.
- 11.05.2021 Seminar Talk: "Deformations of Bitangent Classes of Tropical Quartic Curves", Tübingen.
- 22.01.2021 "TGIZ-Tropical geometry in Zoom", Goethe Universität Frankfurt am Main
Talk: "Deformations of bitangent classes of tropical quartic curves" - 13.07.-16.07.2020 "International Congress on Mathematical Software", TU Braunschweig, Online Conference
Talk: "Tropical Algebraic Geometry - A tropical count of binodal cubic surfaces" - 09.12.-11.12.2019 „Women in Algebra and Symbolic Computation“, SFB-TRR 195, Bad Dürkheim
Talk: „Tropical Cubic Surfaces“ - 29.07.-02.08.2019 „Young Researchers Conference in Non-Archimedean and Tropical Geometry“, Universität Regensburg
Talk: „Relative Realisability of infinite families of tropical lines on general smooth tropical cubic surfaces“ - 08.05.2019 Researchseminar, TU Berlin
Talk: "Realisability of infinite families of tropical lines on general smooth cubic surfaces"
- 26.–27.3.2026, Up-coming: GROW@Dresden 2026, Technische Universität Dresden
- 2.–13.3.2026, Up-coming: Amplitudes and Algebraic Geometry, ESI Vienna
- 4.–5.9.2025, Annual Conference on Combinatorial Synergies, Leibniz University Hannover
- 2.–4.6.2025, Jahrestagung der Fachgruppe Computeralgebra, MPI MiS Leipzig
- 10.-14.7.2023, SIAM AG, Eindhoven, Minisymposium "Matroidal and Tropical Methods in enumerative and algebraic geometry", organized with Claudia Yun.
- 26.4.-28.4.23, Graduate Student Meeting on Applied Algebra and Combinatorics
- 3.4.-4.4.2023, Solving hard polynomial systems
- 13.3.-14.3.2023, Research Data in discrete Mathematics
- 9.-10.2.2023, Northern German Algebraic Geoemtry Seminar
- 2.-4.2.2023, 14th polymake conference and developer meeting
- 28.2.-4.3.2022, OSCAR developer meeting - Tropical Geometry TU Kaiserslautern
- 21.01.2022, 13th polymake conference and developer meeting
- 15.-19.02.2021, Sage/Oscar Days for Combinatorial Algebraic Geometry, online, ICERM (The Institute for Computational and Experimental Research in Mathematics) Brown University
- 28.01.-29.01.2021, 12th polymake conference and developer meeting
- Discussion Session for 12 Lectures on Tropical Geometry (with Paul Görlach)
- 09.05.2019 and 22.10.2019, 27 Questions on cubic surfaces, Workshops at MPI MiS Leipzig
- 09.2020-05.2021 participation in reading group on "Introduction to tropical geometry" by Diane Maclagan & Bernd Sturmfels, Chapter 1-3.
- 05.09.-09.09.2022 "Combinatorial Methods in Algebraic Geometry", Cambridge, England
- 23.05.-27.05.2022 "International Summer School on Tropical Geometry", Valladolid, Spain
- 06.09.-10.09.2021 "Computeralgebra", RWTH Aachen
- 23.08.-27.08.2021 "Tropical homology and Hodge theory", online format
- 26.07.-06.08.2021 "Combinatorial Algebraic Geometry",LMs-Bath Symposium, University of Bath, virtual format
- 28.06.-02.07.2021 "Tropical Moduli Spaces", EWM/EMS Mittag Leffler summer school, virtual format
- 06.-07.2020 "Algebraic and Tropical Online Meetings"
- 03.06.-07.06.2019 „New Perspectives in Gromov-Witten Theory“, Summer School at Sorbonne Université, Paris
- Summersemester 2023: Introduction to tropical geometry
- winter term 2021/2022: teaching assistant for "Commutative Algebra", Lecturer: Thomas Markwig
- Since winter term 2020/21: Conductor of the training for mentors in the mentoring programm for first year students (in the winter term 2020/21 together with Sophia Jahns, since summer term 2021 single-handedly)
- winter term 2020/2021: teaching assistant for "Introduction to algebraic geometry and commutative algebra", Lecturer: Hannah Markwig
- summer term 2020: teaching assistant for "Algebra", Lecturer: Hannah Markwig
- 2014-2020: support class teacher for different lectures